Improvement in steam boilers or generators



UNITED STATES PATENT OEEICE. i

. IIANSING E. HOPKINS, OF NEIV YORK, N. Y.

IMPROVEMENT IN STEAM BOILERS OR GENERATORS.

Specication forming part of Letters Patent No. 2,678, dated June 18, 1842.

To @ZZ whom t may concern/.-

Be it known that I, LANSING E. HOPKINS, of the city of New York, in the State of New York, have invented a new and useful Manner of Constructing Steam Boilers or Generators; and I do hereby declare that the following is afull and exact description thereof.

The main body of my boiler consists of a vertical cylinder which is surmounted by a dome, and has within it a furnace and a struct ure consisting of a series of tlues and of watercompartments combined together in a peculiar manner, which structure is also surrounded by a water-space.

In the accompanying drawings, Figure l is a representation of the exterior of my boiler in perspective. Fig. 2 is a view of the interior, also in perspective, a part of the outer cylinder, dome, tbc., being removed for the purpose of showing the iues and water-spaces. Fig. 3 is a vertical section through the middle of my boiler.

In each of the figures like parts are designated by the same letters of reference.

A A is the exterior case or cylindrical body of the boiler. B is the dome by which it is surmounted, and the upper part of which constitutes the steam-chamber.

C is an interior dome, through which the smoke and gaseous products of combustion pass to the smoke-pipe E.

F F is the water-space which surrounds and passes in between the radiating fluespaces o. ct c.. These flue-spaces are open to the fire at their lower ends and to the domelspace C at their upper ends, so that the draft passes freely through them. Between these flue-spaces the water-spaces F extend and communicate with each other in the axis of the boiler under the plate F 2, which, with the radiating portions F3 ot' said plate, incloses said water-spaces. The lower ends of the water-spaces between the tlues are inelosed by a similar plate.

The dome C is at its lower edge b b firmly affixed by riveting or otherwise to the rim of the plate F2 F3, and the lower plate F3 has attached to it, in like manner, the upper portion of the curved plate I I, the lower portion of said curved plate being at c c riveted to the exterior cylinder, and it thus forms the side wall of the furnace K, and the lower portion of the water-space D is the ash-pit.

G is the steam-pipe.

H II are man-holes; J, a cock for drawing oi the water or for blowing out.

L is the furnace-door; M, a safety-valve, and N N try-cocks, all constructed in the ordnary way.

Fig. 4, represents the manner in which I form the plates which constitute the sides of the flue-spaces ct d and of the water-spaces F.

By this arrangement of the parts there is a large portion of heating-surface exposed to the action of the re, while the fine-passages are large and competent to thc free and unobstructed passing of the smoke and heated `air from the furnace.

I have represented six radiating flue-spaces and the same number of radiating waterspaces between them; but this number may be varied to any desired extent without altering the general arrangement and combination of the respective parts.

Having thus fully described the manner in which I construct my improved steam-boiler 0r generator, what I claim therein as new, and desire to secure by Letters Patent, isi-- The manner in which I have constructed and arranged myitlues and water-spaces and combined the same with the other parts of the apparatus, as herein set forththat is to say, the particular manner of constructing the fines and water-spaces in radiating sections or compartments, and of combining the same with the other parts, as described and represented, by which construction and arrangement the said spaces are in the same number of divisions rendered more convenient to enter, repair, or clean, while a larger' surface is exposed to the action of the tire than when the Hue-spaces consist of round tubes, as heretofore.

LANSING E. HOPKINS.

Witnesses:

VTrros. W. HARVEY,

WM. AUSTIN. p i 

